FR2606957B1 - PASSIVE TRANSPONDER - Google Patents

PASSIVE TRANSPONDER

Info

Publication number
FR2606957B1
FR2606957B1 FR8615911A FR8615911A FR2606957B1 FR 2606957 B1 FR2606957 B1 FR 2606957B1 FR 8615911 A FR8615911 A FR 8615911A FR 8615911 A FR8615911 A FR 8615911A FR 2606957 B1 FR2606957 B1 FR 2606957B1
Authority
FR
France
Prior art keywords
passive transponder
transponder
passive
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
FR8615911A
Other languages
French (fr)
Other versions
FR2606957A1 (en
Inventor
Richard Nicolet
Daniel Koch
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ebauchesfabrik ETA AG
Original Assignee
Ebauchesfabrik ETA AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ebauchesfabrik ETA AG filed Critical Ebauchesfabrik ETA AG
Priority to FR8615911A priority Critical patent/FR2606957B1/en
Priority to DE8787115247T priority patent/DE3772523D1/en
Priority to AT87115247T priority patent/ATE66749T1/en
Priority to EP87115247A priority patent/EP0268089B1/en
Publication of FR2606957A1 publication Critical patent/FR2606957A1/en
Application granted granted Critical
Publication of FR2606957B1 publication Critical patent/FR2606957B1/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/74—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems
    • G01S13/75—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems using transponders powered from received waves, e.g. using passive transponders, or using passive reflectors
    • G01S13/751—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems using transponders powered from received waves, e.g. using passive transponders, or using passive reflectors wherein the responder or reflector radiates a coded signal
    • G01S13/753—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems using transponders powered from received waves, e.g. using passive transponders, or using passive reflectors wherein the responder or reflector radiates a coded signal using frequency selective elements, e.g. resonator
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/06—Details
    • H01Q9/065—Microstrip dipole antennas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
    • H01Q9/26—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole with folded element or elements, the folded parts being spaced apart a small fraction of operating wavelength

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar Systems Or Details Thereof (AREA)
FR8615911A 1986-10-22 1986-11-13 PASSIVE TRANSPONDER Expired FR2606957B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
FR8615911A FR2606957B1 (en) 1986-11-13 1986-11-13 PASSIVE TRANSPONDER
DE8787115247T DE3772523D1 (en) 1986-10-22 1987-10-19 PASSIVE ANSWER DEVICE.
AT87115247T ATE66749T1 (en) 1986-10-22 1987-10-19 PASSIVE RESPONSE DEVICE.
EP87115247A EP0268089B1 (en) 1986-10-22 1987-10-19 Passive transponder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8615911A FR2606957B1 (en) 1986-11-13 1986-11-13 PASSIVE TRANSPONDER

Publications (2)

Publication Number Publication Date
FR2606957A1 FR2606957A1 (en) 1988-05-20
FR2606957B1 true FR2606957B1 (en) 1988-12-09

Family

ID=9340851

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8615911A Expired FR2606957B1 (en) 1986-10-22 1986-11-13 PASSIVE TRANSPONDER

Country Status (1)

Country Link
FR (1) FR2606957B1 (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2311422A1 (en) * 1975-05-15 1976-12-10 France Etat DOUBLET FOLDED IN PLATES
FR2346870A1 (en) * 1976-04-02 1977-10-28 Mecaniplast ANTENNA PERFECTED FOR THE RECEPTION OF U.H.F.
AT374596B (en) * 1979-04-20 1984-05-10 Enander Bengt TO FIND AVALANCHE VICTIMS, ANSWERS TO BE WEARED ON THE BODY
EP0172445B1 (en) * 1984-07-30 1989-11-08 Asulab S.A. Passive transponder, specifically for searching victims of an avalanche

Also Published As

Publication number Publication date
FR2606957A1 (en) 1988-05-20

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Legal Events

Date Code Title Description
ST Notification of lapse

Effective date: 20060731